#import "Controller.h"

NSString *stringa;

@implementation Controller
- (IBAction)gestbtn1:(id)sender {
	stringa = "hello world!";
	[self displayResult];
}

- (void)displayResult;
{
   id s = [NSString stringWithFormat:@"%s", stringa ]; 
   [output setStringValue: s]; 
} 
@end
